As one of the breakout actors of the past year, Melissa McCarthy has found herself at a lot of star-studded events. You'd think, after being nominated for an Oscar for her role in Bridesmaids, she would begin to count herself among the glitterati, but it turns out she still gets flustered like the rest of us when it comes to encounters with Brad Pitt, Angelina Jolie and Meryl Streep.

As a bonus, here's Melissa reading a poem to Ellen in honor of the talk show host's 54th birthday.